JP2012172526A - Fuel storage device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel storage device for a vehicle that can restrain fuel deterioration for preventing occurrence of troubles caused by a deteriorated fuel.SOLUTION: The fuel storage device 1 includes a fuel tank 11 for storing a fuel (F) to be supplied to an engine (internal combustion engine) 2, a fuel temperature sensing means 12 for sensing the temperature of the fuel, a fuel cooling means 13 for indirectly cooling the fuel with a cooling medium (C) passing through a cooling passage 131, and a fuel deterioration sensing means 14 for sensing the deterioration state of the fuel. When the fuel temperature sensing means 12 senses the fuel temperature exceeding a predetermined temperature, the cooling medium is circulated in the cooling passage 131 of the fuel cooling means 13 for indirectly cooling down the fuel by the cooling medium. When the fuel deterioration sensing means 14 senses deterioration of the fuel, the fuel is supplied to the engine 2 for driving the engine 2 for positively consuming the fuel.

Description

  The present invention relates to a fuel storage device for a vehicle that stores fuel supplied to an internal combustion engine in a fuel tank.

2. Description of the Related Art In recent years, electric vehicles equipped with a motor (electric motor) as a vehicle drive source have attracted much attention as environmentally friendly vehicles.
The electric vehicle is equipped with a battery that supplies electric power to the motor, and the cruising distance per charge is determined by the capacity of the battery. However, the capacity of a battery that can be mounted on an automobile is not so large. Therefore, there is a problem that an electric vehicle has a shorter cruising distance than an engine vehicle or the like.

Then, the electric vehicle provided with the cruising distance extension device (range extender) is proposed (for example, patent documents 1 grade).
This electric vehicle includes a power generation engine (internal combustion engine) and a generator driven by the engine. And when the charge amount of the battery decreases, the generator is driven by the engine to generate power, and the cruising distance can be extended by supplying the power generated by the power generation to the battery.

JP-A-6-14407

However, an electric vehicle equipped with a cruising distance extending device (range extender) having the above-described configuration has the following problems.
In other words, the installed engine is not used to drive the vehicle, but is used to generate power by driving the generator when the battery charge is low. And fuel consumption is low. Therefore, it is assumed that the fuel is stored in the fuel tank for a long period of time, and in such a case, the fuel is oxidized and deteriorated. Then, problems such as fuel clogging and fuel tank corrosion due to deteriorated fuel occur.

  Such a problem may also occur in a hybrid vehicle that includes an engine and a motor as drive sources for the vehicle. That is, the lower the frequency of use of the engine, the lower the consumption of fuel. Therefore, it is assumed that the fuel is stored in the fuel tank for a long period of time. As a result, the oxidation deterioration of the fuel as described above occurs, and a defect caused by the deteriorated fuel occurs.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a fuel storage device for a vehicle that can suppress deterioration of fuel and prevent occurrence of problems due to deteriorated fuel. Is.

The present invention includes a fuel tank for storing fuel to be supplied to an internal combustion engine,
Fuel temperature detecting means for detecting the temperature of the fuel in the fuel tank;
A fuel cooling means comprising a cooling passage for circulating the cooling medium, and indirectly cooling the fuel in the fuel tank by the cooling medium flowing in the cooling passage;
Fuel deterioration detection means for detecting the deterioration state of the fuel in the fuel tank,
When the fuel temperature detecting means detects that the temperature of the fuel in the fuel tank exceeds a predetermined temperature, the cooling medium is circulated in the cooling passage of the fuel cooling means, and the cooling medium It is configured to indirectly cool the fuel in the fuel tank,
When the fuel deterioration detection means detects the deterioration of the fuel in the fuel tank, the fuel in the fuel tank is supplied to the internal combustion engine, and the internal combustion engine is driven to The fuel storage device for a vehicle is characterized in that the fuel is actively used (Claim 1).

  As described above, the fuel storage device includes the fuel tank, the fuel temperature detection means, the fuel cooling means, and the fuel deterioration detection means. The fuel storage device is configured to cool the fuel in the fuel tank by the fuel cooling means when the fuel temperature detecting means detects that the temperature of the fuel in the fuel tank exceeds a predetermined temperature. ing. That is, when the temperature of the fuel increases, the fuel is likely to be oxidized and deteriorated. Therefore, when it is detected that the temperature of the fuel exceeds the predetermined temperature, the fuel is cooled by the fuel cooling means so that the fuel is not easily oxidized and deteriorated. Thereby, deterioration of the fuel in the fuel tank can be suppressed.

  The fuel is cooled by the fuel cooling means by circulating a cooling medium in the cooling passage and indirectly cooling the fuel in the fuel tank with the cooling medium. For example, when air or the like is used as the cooling medium, trying to cool the fuel by bringing the cooling medium into direct contact with the fuel will cause the fuel to come into contact with the air, thereby promoting the oxidative deterioration of the fuel. It will be. In order to prevent this, the fuel is not directly cooled by the cooling medium, but the cold heat of the cooling medium is transmitted to the fuel via another member or the like to indirectly cool the fuel. Thereby, the fuel can be cooled while suppressing deterioration of the fuel in the fuel tank.

  In the fuel storage device, when the fuel deterioration detecting means detects the deterioration of the fuel in the fuel tank, the fuel storage device supplies the fuel in the fuel tank to the internal combustion engine and drives the internal combustion engine, thereby It is configured to actively use the fuel inside. That is, when the fuel in the fuel tank deteriorates, there is a risk that problems such as fuel clogging or corrosion of the fuel tank due to the deteriorated fuel may occur. Therefore, when a certain degree of fuel deterioration is detected before the possibility of occurrence of such a malfunction, the internal combustion engine is preferentially and forcibly driven, and fuel is supplied to the internal combustion engine. Use fuel aggressively. Thereby, it is possible to prevent the occurrence of problems caused by deteriorated fuel.

  Thus, according to the present invention, it is possible to provide a fuel storage device for a vehicle that can suppress the deterioration of the fuel and prevent the occurrence of a malfunction due to the deteriorated fuel.

FIG. 3 is an explanatory diagram illustrating a configuration of a fuel storage device in the first embodiment. 3 is a flowchart showing control executed in the ECU of the fuel storage device in the first embodiment. Explanatory drawing which shows the structure of the fuel storage apparatus in Example 2. FIG. Explanatory drawing which shows the structure of the fuel storage apparatus in Example 3. FIG. Explanatory drawing which shows the structure of the fuel storage apparatus in Example 4. FIG. FIG. 9 is an explanatory diagram showing a configuration of a fuel storage device in Example 5. Explanatory drawing which shows the structure of the fuel storage apparatus in Example 6. FIG.

The fuel storage device is not a vehicle drive source, but an electric vehicle including an internal combustion engine for use for other purposes (for example, power generation), or a hybrid including an internal combustion engine and an electric motor as a vehicle drive source. It can be used for automobiles.
For example, the electric vehicle can be used for an electric vehicle provided with a cruising distance extension device (range extender) described later.

Further, as described above, when the fuel temperature detecting means detects that the temperature of the fuel in the fuel tank exceeds the predetermined temperature, the fuel storage device cools the fuel in the fuel tank by the fuel cooling means. It is configured to
For example, a threshold value may be set for the temperature of the fuel, and the fuel may be cooled when the set threshold value is exceeded. The threshold value may be set within a range in which the object of suppressing the oxidative deterioration of the fuel can be achieved.

Further, the cooling of the fuel by the fuel cooling means is performed by circulating a cooling medium in the cooling passage as described above.
As the cooling medium, for example, cooling air, water, or the like can be used. The fuel can be cooled by circulating cooling air using a fan or the like, or circulating and circulating cooling water using a radiator or the like.

Further, as described above, the fuel storage device is configured to positively use the fuel in the fuel tank when the fuel deterioration detection means detects the deterioration of the fuel in the fuel tank.
The deterioration state of the fuel can be determined by, for example, the oxygen concentration or the permeability of the fuel described later. The criteria for judging the deterioration of the fuel may be set within a range that can achieve the purpose of preventing the occurrence of problems caused by the deteriorated fuel.
Regarding the use of fuel, it is preferable to use up the fuel in the fuel tank as soon as possible, for example, by preferentially and forcibly driving the internal combustion engine in order to prevent the occurrence of problems due to deteriorated fuel.

The fuel tank is disposed in close contact with the liquid level of the fuel in the fuel tank, and a fuel part filled with fuel and a non-fuel part not filled with fuel in the space in the fuel tank It is preferable that a separation shielding member is provided for separation.
In this case, by providing the separation shielding member in the fuel tank, the fuel filled in the fuel portion of the fuel tank can be prevented from coming into contact with air. Thereby, fuel deterioration (oxidation deterioration) can be suppressed.

  The separation shielding member is disposed in close contact with the liquid level of the fuel in the fuel tank. The liquid level of the fuel in the fuel tank moves up and down as the fuel increases and decreases. Therefore, it is preferable that the separation shielding member is configured to be able to move in accordance with the vertical movement of the liquid level of the fuel, for example, using buoyancy or the like without being fixed to the fuel tank. Thereby, the separation shielding member can always be disposed in close contact with the liquid level of the fuel.

The non-fuel part of the fuel tank constitutes a part of the cooling passage of the fuel cooling means, and the fuel cooling means is formed by the cooling medium flowing in the non-fuel part of the fuel tank. It is preferable that the fuel in the fuel portion of the fuel tank can be indirectly cooled via the separation shielding member.
In this case, the cold heat of the cooling medium flowing in the non-fuel part of the fuel tank is transmitted to the fuel filled in the fuel part of the fuel tank via the separation shielding member. Thereby, the fuel in a fuel tank can be cooled easily and reliably.

The fuel tank is disposed in the cooling passage of the fuel cooling means, and the fuel cooling means is connected to the fuel via the fuel tank by the cooling medium flowing in the cooling passage. It is preferable that the fuel in the tank can be indirectly cooled (claim 4).
In this case, the cold heat of the cooling medium flowing in the cooling passage is transmitted to the fuel in the fuel tank via the fuel tank. That is, the fuel in the fuel tank is cooled by cooling the fuel tank from the outside with the cooling medium. Thereby, the fuel in a fuel tank can be cooled easily and reliably.

Further, it is preferable that the fuel deterioration detecting means detects a deterioration state of the fuel based on an oxygen concentration of the fuel in the fuel tank.
That is, as the oxidation of the fuel proceeds, the oxygen concentration of the fuel increases. Therefore, it is possible to easily grasp the progress of fuel deterioration (oxidation deterioration) based on the oxygen concentration of the fuel.

Further, it is preferable that the fuel deterioration detecting means detects the deterioration state of the fuel based on the fuel permeability in the fuel tank.
That is, as the fuel oxidation proceeds, the fuel permeability decreases. Therefore, it is possible to easily grasp the progress of fuel deterioration (oxidation deterioration) based on the fuel permeability.

The fuel storage device includes an electric motor for driving the vehicle, a battery for supplying electric power to the electric motor, the internal combustion engine for electric power generation, and driving the internal combustion engine to generate electric power and generating electric power generated by the electric power generation. It is preferably used for an electric vehicle having a generator for supplying the battery.
That is, the fuel storage device is preferably used in an electric vehicle including a cruising distance extension device (range extender) having an internal combustion engine for power generation and a generator driven by the internal combustion engine.

  The internal combustion engine mounted on the electric vehicle having the above configuration is not used to drive the vehicle, but is used to drive the generator to generate power when the battery charge is low. It is used less frequently and consumes less fuel. Therefore, it is assumed that the fuel is stored in the fuel tank for a long time. Therefore, it is very effective to use the fuel storage device that can suppress the deterioration of the fuel and prevent the occurrence of the malfunction due to the deteriorated fuel in the electric vehicle having the above configuration.

Example 1
A vehicle fuel storage device according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the fuel storage device 1 of the present example detects a fuel tank 11 that stores fuel (F in the drawing) supplied to an engine (internal combustion engine) 2 and the temperature of the fuel in the fuel tank 11. A fuel temperature detecting means 12 and a cooling passage 131 for flowing a cooling medium (C in the figure) are provided, and a fuel cooling means 13 for indirectly cooling the fuel in the fuel tank 11 with the cooling medium flowing in the cooling passage 131. And a fuel deterioration detection means 14 for detecting the deterioration state of the fuel in the fuel tank 11.

When the fuel temperature detecting unit 12 detects that the temperature of the fuel in the fuel tank 11 exceeds a predetermined temperature, the fuel storage device 1 causes the cooling medium to flow through the cooling passage 131 of the fuel cooling unit 13. The fuel tank 11 is configured to indirectly cool the fuel in the fuel tank 11 and when the fuel deterioration detection means 14 detects the deterioration of the fuel in the fuel tank 11. By supplying the fuel to the engine 2 and driving the engine 2, the fuel in the fuel tank 11 is actively used.
This will be described in detail below.

As shown in FIG. 1, the fuel storage device 1 of this example is driven by a vehicle driving motor (electric motor) 3, a battery 4 that supplies electric power to the motor 3, a power generation engine 2, and the engine 2. The electric vehicle 8 is used in an electric vehicle 8 having a generator 5 that generates power and supplies the battery 4 with electric power generated by the power generation.
That is, the fuel storage device 1 is used for an electric vehicle 8 including a cruising distance extension device (range extender) having a power generation engine 2 and a generator 5 driven by the engine 2.

The engine 2 is provided with an intake pipe 21 and an exhaust pipe 22. The intake pipe 21 is provided with an intake air temperature sensor 121 and an intake air amount sensor 122. Further, the engine 2 is provided with a cooling pipe 29 for circulating cooling water for cooling the engine 2.
The generator 5 is provided with a cooling pipe 59 for circulating cooling water for cooling the generator 5.

As shown in FIG. 1, the fuel storage device 1 includes a fuel tank 11, a fuel temperature detection unit 12, a fuel cooling unit 13, and a fuel deterioration detection unit 14.
The fuel storage device 1 also includes an ECU 10 that executes various controls such as the fuel cooling means 13.

  Fuel supplied to the engine 2 is stored in the fuel tank 11. In addition, a plate-shaped separation shielding member 15 is provided in the fuel tank 11. The separation shielding member 15 is disposed in close contact with the fuel level in the fuel tank 11. Further, the separation shielding member 15 separates the space in the fuel tank 11 into a fuel part 111 filled with fuel and a non-fuel part 112 not filled with fuel.

Further, the separation shielding member 15 is not fixed to the fuel tank 11 but is attached to a rod-like attachment member 152 provided in the fuel tank 11 in the vertical direction. The separation shielding member 15 is disposed on the fuel level using buoyancy, and is configured to move in the vertical direction along the mounting member 152 in accordance with the vertical movement of the fuel level.
The separation shielding member 15 is provided with a fuel amount sensor 151 that detects the amount of fuel in the fuel tank 11.

  The fuel tank 11 is provided with a fuel temperature detecting means 12 and a fuel deterioration detecting means 14. The fuel temperature detection means 12 is a temperature sensor that detects the temperature of the fuel in the fuel tank 11. The fuel deterioration detection means 14 is a fuel deterioration sensor that detects the deterioration state of the fuel in the fuel tank 11. Specifically, the fuel deterioration sensor can detect the oxygen concentration of the fuel in the fuel tank 11.

Further, a fuel pump 16 for supplying the fuel in the fuel tank 11 to the engine 2 is provided in the fuel tank 11. The fuel pump 16 is connected to the engine 2 via a fuel pipe 17. The fuel in the fuel tank 11 is supplied to the engine 2 through the fuel pipe 17 by the fuel pump 16.
The fuel tank 11 is disposed in a cooling passage 131 of the fuel cooling means 13 described later.

As shown in the figure, the fuel cooling means 13 includes a cooling passage 131 for circulating a cooling medium, a cooling portion 130 for forming the cooling passage 131, and a cooling fan 132 for circulating the cooling medium in the cooling passage 131. It is comprised by.
The fuel cooling means 13 is configured to be able to indirectly cool the fuel in the fuel tank 11 via the fuel tank 11 with a cooling medium flowing in the cooling passage 131.

Specifically, when the cooling medium is circulated in the cooling passage 131, the cold heat of the cooling medium is transmitted to the fuel in the fuel tank 11 through the fuel tank 11. That is, by cooling the fuel tank 11 from the outside with the cooling medium, the fuel in the fuel tank 11 is indirectly cooled.
In this example, cooling air is used as the cooling medium. The cooling air is introduced from the outside of the vehicle by turning the cooling fan 132 and flows through the cooling passage 131.

Next, control executed in the ECU 10 of the fuel storage device 1 of this example will be described using the flowchart of FIG.
In the figure, the ECU 10 first determines whether or not the fuel in the fuel tank 11 has deteriorated (step S1). Specifically, it is determined whether or not the oxygen concentration of the fuel detected by the fuel deterioration sensor that is the fuel deterioration detection means 14 exceeds a threshold value A1 (for example, 15%).

If the oxygen concentration of the fuel exceeds the threshold value A1 (“No” in step S1), it is determined that the fuel in the fuel tank 11 has deteriorated, and the fuel consumption mode (mode M1) is executed. In the fuel consumption mode, the fuel in the fuel tank 11 is actively used by supplying the fuel in the fuel tank 11 to the engine 2 and driving the engine 2. Further, the cooling fan 132 of the fuel cooling means 13 is turned ON, the cooling medium is circulated in the cooling passage 131, and the fuel in the fuel tank 11 is cooled by the cooling medium.
On the other hand, when the oxygen concentration of the fuel is not more than the threshold value A1 (“Yes” in step S1), it is determined that the fuel in the fuel tank 11 has not deteriorated, and the process proceeds to step S2.

  Next, the ECU 10 determines whether or not the temperature of the fuel in the fuel tank 11 exceeds a predetermined temperature (step S2). Specifically, it is determined whether or not the temperature of the fuel detected by the fuel temperature sensor that is the fuel temperature detecting means 12 exceeds a threshold value A2 (for example, 25 ° C.).

When the temperature of the fuel exceeds the threshold value A2 (“No” in step S2), the deterioration suppression mode (mode M2) is executed. In this deterioration suppression mode, the cooling fan 132 of the fuel cooling means 13 is turned on, the cooling medium is circulated in the cooling passage 131, and the fuel in the fuel tank 11 is cooled by the cooling medium.
On the other hand, when the fuel temperature is equal to or lower than the threshold value A2 (“Yes” in step S2), the normal mode (mode M3) is executed. In this normal mode, normal operation and normal fuel storage are performed.

Next, the effect of the fuel storage device 1 of this example will be described.
The fuel storage device 1 of this example includes a fuel tank 11, a fuel temperature detection unit 12, a fuel cooling unit 13, and a fuel deterioration detection unit 14. The fuel storage device 1 cools the fuel in the fuel tank 11 by the fuel cooling means 13 when the fuel temperature detecting means 12 detects that the temperature of the fuel in the fuel tank 11 exceeds the predetermined temperature. It is configured to That is, when the temperature of the fuel increases, the fuel is likely to be oxidized and deteriorated. Therefore, the fuel cooling means 13 cools the fuel when it is detected that the temperature of the fuel exceeds a predetermined temperature (threshold A2 in this example) so that the fuel is not easily oxidized and deteriorated. Thereby, deterioration of the fuel in the fuel tank 11 can be suppressed.

  The fuel is cooled by the fuel cooling means 13 by circulating a cooling medium in the cooling passage 131 and indirectly cooling the fuel in the fuel tank 11 with the cooling medium. For example, when air or the like is used as a cooling medium, if the cooling medium is brought into direct contact with the fuel and the fuel F is cooled, the fuel comes into contact with the air. Will end up. In order to prevent this, the fuel is not directly cooled by the cooling medium, but the cooling heat of the cooling medium is transmitted to the fuel via another member (in this example, the fuel tank 11), and the fuel is indirectly transmitted. Cool. Thereby, the fuel can be cooled while suppressing deterioration of the fuel in the fuel tank 11.

  Further, when the fuel storage device 1 detects the deterioration of the fuel in the fuel tank 11 (in this example, the oxygen concentration of the fuel exceeds the threshold value A1) by the fuel deterioration detection means 14, the fuel storage device 1 The fuel in the fuel tank 11 is actively used by supplying the fuel to the engine 2 and driving the engine 2. That is, when the fuel in the fuel tank 11 deteriorates, there is a possibility that problems such as fuel clogging and corrosion of the fuel tank 11 due to the deteriorated fuel may occur. Therefore, when a certain degree of fuel deterioration is detected before the possibility of such a malfunction increases, the engine 2 is preferentially and forcibly driven, and fuel is supplied to the engine 2, Use fuel aggressively. Thereby, it is possible to prevent the occurrence of problems caused by deteriorated fuel.

  Further, in this example, the fuel tank 11 is disposed in close contact with the liquid level of the fuel in the fuel tank 11, and the fuel in the space in the fuel tank 11 is filled with the fuel portion 111 and the fuel. A separation shielding member 15 is provided for separation from the non-fuel portion 112 that is not. By providing the separation shielding member 15 in the fuel tank 11, it is possible to suppress the fuel filled in the fuel portion 111 of the fuel tank 11 from coming into contact with air. Thereby, fuel deterioration (oxidation deterioration) can be suppressed.

  The fuel tank 11 is disposed in the cooling passage 131 of the fuel cooling means 13. The fuel cooling means 13 is connected to the fuel tank 11 via the fuel tank 11 by a cooling medium flowing in the cooling passage 131. The internal fuel can be indirectly cooled. Therefore, the cold heat of the cooling medium flowing in the cooling passage 131 is transmitted to the fuel in the fuel tank 11 through the fuel tank 11. That is, by cooling the fuel tank 11 from the outside with the cooling medium, the fuel in the fuel tank 11 is cooled. Thereby, the fuel in the fuel tank 11 can be cooled easily and reliably.

  Further, the fuel deterioration detection means 14 detects the fuel deterioration state based on the oxygen concentration of the fuel in the fuel tank 11. That is, as the oxidation of the fuel proceeds, the oxygen concentration of the fuel increases. Therefore, it is possible to easily grasp the progress of fuel deterioration (oxidation deterioration) based on the oxygen concentration of the fuel. The deterioration state of the fuel in the fuel tank 11 can also be detected by the fuel permeability.

  In addition, the fuel storage device 1 is driven by a vehicle driving motor (electric motor) 3, a battery 4 that supplies electric power to the motor 3, a power generation engine 2, a power generation by being driven by the engine 2, and generated by the power generation It is used for an electric vehicle 8 having a generator 5 for supplying the generated power to the battery 4. That is, the fuel storage device 1 is used in an electric vehicle 8 including a cruising distance extension device (range extender) having a power generation engine 2 and a generator 5 driven by the engine 2.

  The engine 2 mounted on the electric vehicle 8 having the above-described configuration is not used for driving the vehicle, but is used only for driving the generator 5 to generate power when the battery 4 is less charged. Therefore, it is used less frequently and consumes less fuel. Therefore, it is assumed that the fuel is stored in the fuel tank 11 for a long time. Therefore, it is very effective to use the fuel storage device 1 capable of suppressing the deterioration of the fuel and preventing the occurrence of the malfunction due to the deteriorated fuel in the electric vehicle 8 having the above configuration.

  As described above, according to this example, it is possible to provide the fuel storage device 1 for a vehicle that can suppress the deterioration of the fuel and can prevent the occurrence of the malfunction due to the deteriorated fuel.

(Example 2)
In this example, as shown in FIG. 3, the configuration of the fuel cooling means 13 of the fuel storage device 1 is changed.
As shown in the figure, in the fuel cooling means 13, the cooling part 130 forming the cooling passage 131 is connected in the middle of the intake pipe 21 of the engine 2. Further, cooling air is used as a cooling medium, and intake air of the engine 2 is used as the cooling air.
The other configuration is the same as that of the first embodiment, and has the same operation and effect.

(Example 3)
In this example, as shown in FIG. 4, the configurations of the fuel tank 11 and the fuel cooling means 13 of the fuel storage device 1 are changed.
As shown in the figure, in the fuel cooling means 13, the cooling part 130 forming the cooling passage 131 is connected in the middle of the intake pipe 21 of the engine 2. Further, cooling air is used as a cooling medium, and intake air of the engine 2 is used as the cooling air.

Further, the non-fuel portion 112 of the fuel tank 11 constitutes a part of the cooling passage 131 of the fuel cooling means 13. Further, the fuel cooling means 13 can indirectly cool the fuel in the fuel portion 111 of the fuel tank 11 through the separation shielding member 15 by the cooling medium flowing in the non-fuel portion 112 of the fuel tank 11. It is configured as follows.
Other configurations are the same as those in the first embodiment.

In the case of this example, the cold heat of the cooling medium flowing in the non-fuel part 112 of the fuel tank 11 is transmitted to the fuel filled in the fuel part 111 of the fuel tank 11 via the separation shielding member 15. Thereby, the fuel in the fuel tank 11 can be cooled easily and reliably.
The other functions and effects are the same as those of the first embodiment.

Example 4
This example is an example in which the configuration of the fuel cooling means 13 of the fuel storage device 1 is changed as shown in FIG.
As shown in the figure, in the fuel cooling means 13, the cooling part 130 forming the cooling passage 131 is formed in an annular shape. The cooling unit 130 is provided with a cooling pump 133 for circulating the cooling medium in the cooling passage 131 and a radiator 134 for circulating the cooling medium. Further, cooling water is used as a cooling medium.
The other configuration is the same as that of the first embodiment, and has the same operation and effect.

(Example 5)
In this example, as shown in FIG. 6, the configuration of the fuel cooling means 13 of the fuel storage device 1 is changed.
As shown in the figure, in the fuel cooling means 13, the cooling portion 130 that forms the cooling passage 131 is connected in the middle of the cooling pipe 29 of the engine 2. Further, cooling water is used as the cooling medium, and the cooling water of the engine 2 is used as the cooling water. The cooling unit 130 is also provided with an electric cooling pump 135 for circulating a cooling medium through the cooling passage 131. Even when the engine 2 is stopped, the cooling water can be introduced from the cooling pipe 29 of the engine 2 into the cooling passage 131 and can be circulated by operating the electric cooling pump 135.
The other configuration is the same as that of the first embodiment, and has the same operation and effect.

(Example 6)
This example is an example in which the configuration of the fuel cooling means 13 of the fuel storage device 1 is changed as shown in FIG.
As shown in the figure, in the fuel cooling means 13, the cooling part 130 that forms the cooling passage 131 is connected in the middle of the cooling pipe 59 of the generator 5. Further, cooling water is used as the cooling medium, and the cooling water of the generator 5 is used as the cooling water. The cooling unit 130 is also provided with an electric cooling pump 135 for circulating a cooling medium through the cooling passage 131. Even when the generator 5 is stopped, the cooling water can be introduced and circulated into the cooling passage 131 from the cooling pipe 59 of the generator 5 by operating the electric cooling pump 135. .
The other configuration is the same as that of the first embodiment, and has the same operation and effect.

DESCRIPTION OF SYMBOLS 1 Fuel storage apparatus 11 Fuel tank 12 Fuel temperature detection means 13 Fuel cooling means 131 Cooling passage 14 Fuel deterioration detection means 2 Engine (internal combustion engine)
C Cooling medium F Fuel

Claims (7)

A fuel tank for storing fuel to be supplied to the internal combustion engine;
Fuel temperature detecting means for detecting the temperature of the fuel in the fuel tank;
A fuel cooling means comprising a cooling passage for circulating the cooling medium, and indirectly cooling the fuel in the fuel tank by the cooling medium flowing in the cooling passage;
Fuel deterioration detection means for detecting the deterioration state of the fuel in the fuel tank,
When the fuel temperature detecting means detects that the temperature of the fuel in the fuel tank exceeds a predetermined temperature, the cooling medium is circulated in the cooling passage of the fuel cooling means, and the cooling medium It is configured to indirectly cool the fuel in the fuel tank,
When the fuel deterioration detection means detects the deterioration of the fuel in the fuel tank, the fuel in the fuel tank is supplied to the internal combustion engine, and the internal combustion engine is driven to A fuel storage device for a vehicle, wherein the fuel storage device is configured to actively use the fuel.   2. The fuel storage device according to claim 1, wherein the fuel tank is disposed in close contact with the liquid level of the fuel in the fuel tank, and a fuel portion in which the fuel is filled in the space in the fuel tank; A fuel storage device for a vehicle, wherein a separation shielding member is provided for separation from a non-fuel portion not filled with fuel.   3. The fuel storage device according to claim 2, wherein the non-fuel portion of the fuel tank constitutes a part of the cooling passage of the fuel cooling means, and the fuel cooling means is the non-fuel portion of the fuel tank. Fuel storage for a vehicle, wherein the fuel in the fuel part of the fuel tank can be indirectly cooled by the cooling medium flowing in the fuel part through the separation shielding member apparatus.   4. The fuel storage device according to claim 1, wherein the fuel tank is disposed in the cooling passage of the fuel cooling means, and the fuel cooling means is disposed in the cooling passage. A fuel storage device for a vehicle, wherein the fuel in the fuel tank can be indirectly cooled by the cooling medium flowing through the fuel tank via the fuel tank.   The fuel storage device according to any one of claims 1 to 4, wherein the fuel deterioration detecting means detects a deterioration state of the fuel based on an oxygen concentration of the fuel in the fuel tank. Fuel storage device.   The fuel storage device according to any one of claims 1 to 4, wherein the fuel deterioration detection means detects a deterioration state of the fuel based on a fuel permeability in the fuel tank. Fuel storage device.   The fuel storage device according to any one of claims 1 to 6, wherein the electric motor for driving the vehicle, a battery for supplying electric power to the electric motor, the internal combustion engine for power generation, and the internal combustion engine are driven by the internal combustion engine. A fuel storage device for a vehicle, wherein the fuel storage device is used in an electric vehicle having a generator that generates electric power and supplies electric power generated by the power generation to the battery.

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